Painting pen



FIG. 1 is a perspective view of a painting pen showing my design;

FIG. 2 is an end elevational view thereof;

FIG. 3 is an end elevational view of the end opposite that shown in FIG. 2;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a rear elevational view thereof. 

The ornamental design for a painting pen, as shown and described. 